Oppo A9 a mid-range smartphone has been launched in India under ‘A series’ targeting mid-range segment.It has a 6.53-inch Full HD+ Dew Drop notch display with 90.7% screen-to-body ratio, is powered by MediaTek Helio P70 SoC with 4GB of RAM, runs Android Pie with ColorOS 6.0, has a 16-megapixel rear…